Properties of Materials - exam practice
Properties of Materials
Question 1 of 4
Surfboards and rigid hull dinghies are constructed from addition polymers.
The diagram below shows the monomer form of one of these addition polymers.
Draw the repeating unit of the polymer below.
The outer skin of the surfboard is often made from a composite material made from glass fibres surrounded by a polyester.
Surfboards with composite coatings are more expensive.
Suggest two reasons why an outer skin is added to the poly(styrene) core.
The surfboard coating has a polyester which melts when it is heated.
Explain why the coating melts when heated.
Some polymers do not melt when heated.
Describe the difference between these polymers and those that melt when heated.
This question is about the properties of ceramics.
Which two processes are used to make ceramic plates?
Tick two boxes.
The table below shows some properties of ceramics.
Explain, using information from the table, why ceramics are suitable to make a cup that will hold a hot drink.
Explain why ceramics could not be used for electrical wires.
Match the objects below to the materials they are made from.
This question is about the properties of LDPE and HDPE.
Low density poly(ethene) and high density poly(ethene) are both formed from the same ethene monomer.
Draw the ethene monomer used to create both LDPE and HDPE.
HDPE and LDPE are formed under different conditions.
State one condition that is different for the production of LDPE and HDPE.
Some polymers melt when heated and others do not.
State the name of the polymers that do not melt when heated.
Explain why the structure of these polymers allows them to remain rigid.
A student is using disposable cutlery to eat their lunch.
The cutlery is made from a polymer.
The student is eating hot food.
The diagram below shows two different polymers.
Explain, with reference to structure, which one is more suitable for making disposable cutlery.
The student drinks from a cup made from a polymer, poly(styrene).
The diagram below represents the structure of poly(styrene).
Draw the monomer that is used to produce this polymer.
The school chose to use poly(styrene) cups for hot drinks instead of ceramic mugs.
Give one reason, why the school may have chosen to use poly(styrene).